Hydraulic drill.



Patented August 11, 1903.

PATENT OFFICE.

PATTILLo HIGGINS, oE BEAUMONT, TExAs.v

HYDRAULIC DRILL.

SPECIFICATION forming part of Letters Patent N o. 735,769, dated August11 1903.

Application filed December 17,1902. Serial No. 135,566. (No model.)

The present invention appertains to the class of drillsl designed forboring deep kwells and in operation having a vertical reciprocatorymovement imparted thereto from the surface by Inechanical appliancessuch as generally employed in deep-well-drilling machinery, the drillbeing longitudinally bored to deliver the water to the bottom of theopening being formed.

This invention provides a longitudinallybored drill having an enlargedpoint andv lateral ducts leading from the lower end of the longitudinalopening of the drill through;A

the sides thereof in rear of the enlarged point, said ducts incliningeither upwardly or downwardly, as desired.

The invention will be more particularly set forth hereinafter andclaimed an d is shown in the drawings hereto attached, in which- Figurel is a side elevation of a drill embodying the invention, the same beingshown attached to a tubular drill-rod. Fig. 2 is a vertical centralsection of the drill on a larger scale, showing the lateral ductsupwardly inclined. Fig. 3 is a view similar to Fig. 2, showing thelateral ducts downwardly inclined.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The drill l has its point enlarged so as to provide a bore or opening oflarger diameter than the body of the drill vor the drill-rod, so as topermit free operation of these parts in the formation ofthe well. Thedrill-point is round and its end at and operates by driving the strataor formation ahead of the drill as the latter descends. In the event ofthe formation being rock or like hard substance the same is pounded, thechips or particles being carried olf by water, conveyed to the bottom ofthe bore or opening through the tubular drill-rod and the longitudinalopen.- ing and lateral ducts of the drill.

The drill-rod 2 is coupled to the drill in any way, and, as shown, theupper end of the drill is reduced to form a shank, which is externallythreaded for reception of the coupling by means of which the union orjoint is effected. Thelongitudinal opening 3, formed central of thedrill, terminates a short distance from the end thereof, and lateralducts 4 lead therefrom through the sides of the drill.

These ducts may incline upwardly, as shown in Fig. 2, or downwardly, asshown in Fig. 3, and may be provided in any number. In the form of drillhavingthe ducts upwardly inclined the water has an initial upwardcirculation imparted thereto. In the form of drill shown in Fig. 3 thewater is directed downward, thereby assisting in washing away thedrillings or loose particles and keeping the opening clear, therebyfacilitating the operation, particularly in drilling through stone andlike hard formations.

I Having thus described the invention, what

